Prietena vine mâine.

Prietena is

• Feminine (it refers to a female person)
• Singular (only one individual)
• Definite (translates as “the friend” rather than “a friend”).
  In Romanian, the definite article for feminine singular nouns is suffixed as -a (prietină → prietena).

Romanian uses enclitic definite articles instead of separate words.

• Feminine singular: noun + -a (prietenă → prietena)
• Masculine singular: noun + -ul or -l (prieten → prietenul)
  This suffix replaces the standalone “the.”

Vine is the 3rd person singular present tense of a veni (“to come”).
Conjugation in the present:

• eu vin (I come)
• tu vii (you come)
• el/ea vine (he/she comes)
  Thus prietena vine means “the friend comes” or “the friend is coming.”

Mâine is an adverb of time meaning “tomorrow.”
In Romanian, time adverbs stand alone (no preposition):

• ieri (yesterday)
• azi (today)
• mâine (tomorrow)

Yes. Romanian has flexible word order.

• Prietena vine mâine (neutral S-V-Adv): “The friend is coming tomorrow.”
• Mâine vine prietena (Adv-V-S): emphasizes mâine (“Tomorrow, the friend is coming.”)
  The core meaning stays the same.

Context decides the meaning. Prietena can be

• a female friend
• a romantic partner (“girlfriend”)
  To be explicit:
• Non-romantic friend: prietena mea (“my friend,” f.) in a friendly context
• Romantic partner: often iubita mea (“my beloved”/“my girlfriend”) or still prietena mea if context makes it clear.

Pronunciation: /ˈmɨj.ne/

• â is /ɨ/, a close central unrounded vowel (no exact English equivalent; think of the ‘i’ in “roses” or “cousin”).
• Stress is on the first syllable: MÂI-ne.

Romanian is a pro-drop language. The verb ending -e in vine already signals 3rd person singular, so the pronoun ea is optional and often omitted.

• Ea vine mâine. (She is coming tomorrow.)
• Prietena vine mâine. (No need for “ea,” because prietena is the subject.)